The world indoor 400m champion will challenge the Racers at the second Grand Slam in Florida

Amber Anning is set to compete as a Challenger at the second meet of the Grand Slam Track series, taking place May 2–4 at the Ansin Sports Complex in Miami, Florida.

The Brit is still riding the momentum from her dramatic victory at the World Indoor Championships in Nanjing, where she edged out American Alexis Holmes by just 0.03 seconds to claim gold in the 400m (50.6). That historic win made her the first British woman to ever capture an individual world indoor title in a sprint event.

Her triumph came just two weeks after a heart-breaking moment at the European Indoor Championships in Apeldoorn, where she was disqualified in the 400m heats for a lane infringement—leaving the track in tears.

In Miami, Anning will go head-to-head once again with Holmes in the Long Sprint category (200m/400m), holding the British indoor 200m record of 22.60 and a British record of 49.29 in the 400m. Holmes is a confirmed Grand Slam Racer, already competed in the opening meet in Kingston (April 4–6), where she placed fourth overall.

The women’s long sprints in Miami will also feature Racers Salwa Eid Naser, Marileidy Paulino, Nickisha Pryce, and Gabby Thomas. However, Thomas has hinted at possibly switching events throughout the Slam series, so her exact race selection in Miami remains uncertain.

Joining the Challenger ranks alongside Anning are five other athletes announced today. Among them is American multi-event star Anna Hall, who will tackle both the 400m flat and 400m hurdles. Hall, the 2023 World Championship silver medallist in the heptathlon, hasn’t raced either event since June 2023.

Canada’s Andre De Grasse, a seven-time Olympic medallist, is also confirmed for Miami. He will compete in the men’s short sprints (100m/200m), facing a field of Racers that include Kenny Bednarek, Fred Kerley, Zharnel Hughes, and Oblique Seville—all eyeing the $100,000 top prize.

The men’s short distance category (800m/1500m) will see Kenya’s Timothy Cheruiyot challenge. The former world champion in the 1500m, who boasts an impressive 1:43.11 personal best in the 800m, will challenge a stacked line-up featuring Josh Kerr, Yared Nuguse, Cole Hocker, and Marco Arop.

The other Challenger announcements include America's hurdler Kendra Harrison and Australia’s rising star Claudia Hollingsworth. Harrison, the former 100m hurdles world record-holder (12.20), will launch her 2025 season in the short hurdles category (100mH/100m).

Meanwhile, 19-year-old Hollingsworth, a versatile threat across the 800m and 1500m, will line up against an elite field including Mary Moraa, Jess Hull, Nikki Hiltz, and Diribe Welteji. Hollingsworth made headlines at just 17 by becoming the Oceanic 1500m champion, and she’s continued to impress ever since.